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[SCSI] libsas: Start I_T recovery if ABORT TASK fails 

The EH should fall into I_T recovery (and potentially stronger
remedies) if ABORT TASK fails.

Signed-off-by: Alexis Bruemmer <alexisb@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Darrick J. Wong 2007-01-11 14:15:46 -08:00 committed by James Bottomley
parent 6b0efb8516
commit 02cd743bb3
1 changed files with 11 additions and 3 deletions
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14
drivers/scsi/libsas/sas_scsi_host.c
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@ -281,6 +281,7 @@ enum task_disposition {
TASK_IS_ABORTED,
TASK_IS_AT_LU,
TASK_IS_NOT_AT_LU,
TASK_ABORT_FAILED,
};
static enum task_disposition sas_scsi_find_task(struct sas_task *task)
@ -331,15 +332,21 @@ static enum task_disposition sas_scsi_find_task(struct sas_task *task)
SAS_DPRINTK("%s: querying task 0x%p\n",
__FUNCTION__, task);
res = si->dft->lldd_query_task(task);
if (res == TMF_RESP_FUNC_SUCC) {
switch (res) {
case TMF_RESP_FUNC_SUCC:
SAS_DPRINTK("%s: task 0x%p at LU\n",
__FUNCTION__, task);
return TASK_IS_AT_LU;
} else if (res == TMF_RESP_FUNC_COMPLETE) {
case TMF_RESP_FUNC_COMPLETE:
SAS_DPRINTK("%s: task 0x%p not at LU\n",
__FUNCTION__, task);
return TASK_IS_NOT_AT_LU;
}
case TMF_RESP_FUNC_FAILED:
SAS_DPRINTK("%s: task 0x%p failed to abort\n",
__FUNCTION__, task);
return TASK_ABORT_FAILED;
}
}
}
return res;
@ -475,6 +482,7 @@ Again:
}
/* fallthrough */
case TASK_IS_NOT_AT_LU:
case TASK_ABORT_FAILED:
SAS_DPRINTK("task 0x%p is not at LU: I_T recover\n",
task);
tmf_resp = sas_recover_I_T(task->dev);